This authentic incense is produced from the flowers of a sacred tree. In India, it is called "nagakesara", "nag champa" or "cobra saffron" tree. In Ayurvedic medicine, extracts from the flowers, seeds, leaves and bark of this plant have been used since ancient times. Nagakesara or nag champa trees grow in many regions, from the southern slopes of the Himalayas to Sri Lanka and the Andaman Islands. Mesua or ironwood is a medium-sized tree with exceptionally hard wood and fragrant flowers. The most subtle incense is made from the flowers of the nag champa tree, which symbolize sexuality, fertility, passion and love.